Conard, H. S. 1. (1956). How to know the mosses and liverworts: Pictured-keys for determining many of the North American mosses and liverworts, with suggestions and aids for their study (Revised edition.). Dubuque, Iowa: W.C. Brown Company Publishers.
Chicago Style CitationConard, Henry Shoemaker 1874-1971. How to Know the Mosses and Liverworts: Pictured-keys for Determining Many of the North American Mosses and Liverworts, With Suggestions and Aids for Their Study. Revised edition. Dubuque, Iowa: W.C. Brown Company Publishers, 1956.
MLA CitationConard, Henry Shoemaker 1874-1971. How to Know the Mosses and Liverworts: Pictured-keys for Determining Many of the North American Mosses and Liverworts, With Suggestions and Aids for Their Study. Revised edition. Dubuque, Iowa: W.C. Brown Company Publishers, 1956.